Measurements were made of the diffusion of radioactive 110mAg in monocrystalline PbMgNbO3-PbTiO3 piezoelectric ceramic. The material belonged to the perovskite family. It was found that the diffusion was characterized by:

D (m2/s) = 3.4 x 10-3 exp[-277(kJ/mol)/RT]

D.J.Lewis, D.Gupta, M.R.Notis, Y.Imanaka: Journal of the American Ceramic Society, 2001, 84[8], 1777-84